Tooth-fastening for ice-plows



J. G. BODENSTEIN TOGTH FASTENING FOR ICE PLOWS).

Patented Feb. 7, 1898.

INVENTOR.

WITNESSES r": noams Parana co, wo'roumn. wnsnmm'on, o. c.

UNETED STATES PATENT rricn,

JOHN G. BODENSTEIN, OF STAATSBURG, NEW? YORK.

TOOTH-FASTENlNG FOR ICE-FLOWS.

SPECIFICATION forming part of Letters lPatent No. 491,332, datedFebruary '7, 1893.

Application filed September 13, 1890. Serial No. 864,857. (No model.)

To aZZ whom may concern.-

Be it known that 1, JOHN G. BODENSTEIN, a citizen of the United States,residing at Staatsburg,in the county of Dutchess and State of New York,have invented certain new and useful Improvements in Inserted Tooth-Fatstenings for Ice-Flows; and I do hereby declare the following to be afull, clear,and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to inserted tooth fastenings for ice-plows in whicha stop-plate and a wedge hey are used in conjunction with each other;and the objects of my improvementare first, to provide a convenientmethod for holding the stop-plate and wedgehey together to better guardagainst loss of the key during the adjustment of the plow teeth; andsecond to provide a tooth fastening which readily adapts itself to anyspace or any angle between the teeth and supporting blades of the plow,by means of a pivoted, adjustable, head upon the stop-plate. I attainthese objects by means of the device illustrated in the accompanyingdrawings, in which Figure l, is a perspective view of part of an iceplow, with some portion broken away to better show my improvement; Fig.2, is a side elevation of the same showing mydevice applied to a plowhaving teeth not very large and not very much curved; Fig. 3, is asimilar view showing mydevice applied to a plow having larger teeth, setand shaped with greater curves.

Similarletters refer to similar parts th rou ghcut the several views.

A represents a plow-beam, between the two parts of which are bolted ata, the supporting plates 15. Against, and in front of, these plates 35,are placed the adjustable teeth or cutters 0, fitting snugly between theparts of the plow-beam A, My fastening is designed to fit between theconcave front surface of the teeth G and the rear convex surface of thesupporting plates B, and consists in part of a stop-plate I), having atthe bottom a shoulder ti formed as shown, to engage with the under sideof the plow-beam for holding the plate in place, and having at the topan adjustable head E, pivoted to D at d. This head E rests upon the plowbeam A with a perfectly even bearing, and yet allows the plate D toadapt itself to different angles in different plows, as shown in Figs. 2and E is perforated at b, to permit the passage of the upper end f, ofthe wedge key F. This key constitutes the other portion of my fastening,and is provided on its upper threaded end f, with anut e, by which the-wedge-key may be drawn up to bear against the rear edge of thesupporting plate B, and thus crowd the stop-plate 1 against the tooth O,to hold it securely in place. Both stop plate and wedge-key are beveledat the bottom in the usual manner to present the least resistance to icechips.

The device herein described is an improvement upon the inserted-toothfastening previously invented by me and shown in Patent No. 295,724.,dated March 25, 1884., in which a perforated L- head served to preventan accidental separation of the two parts of the fastening during theadjustment of the teeth of the plow. But with that device, the L-headbeing rigid, it is necessary to provide stop-plates of different sizesand shapes, for different ice-plows, in order to have the fastening fitas perfectly as it should. hereas, with the device herein-described,having a perforated head pivoted to the stop-plate, it is possible touse the same fastening for plows of various sizes and shapes, as isshown in Figs. 2 and 3 of the drawings, thus avoiding much trouble andexpense in securing and adjusting ice-plow teeth.

The concavity c, underneath the pivoted head, allows the wedge-keyrather more freedom of movement for convenient adjustment to plowshaving teeth with different sizes and angles.

Having thus described my invention what I claim and desire to secure byLetters Patent is:

The combination with a plow beam consisting of the members A, A, and thesupporting plates 13 B interposed between said members and boltedthereto at a distance a part of a tooth 0 located between said membersand abutting against one of the supporting plates,

and having a shoulder to engage the lower edge of one of the members, astop plate D, a wedge F, having a screw-threaded shank and a perforatedhead pivoted to the upper end 5 of the stop plate, and a nut to clampthe head In testimony whereof I ELffiX my signature in presence of twoWitnesses.

JOHN G. BODENSTEIN. Witnesses:

in place, on the shank of the Wedge,substan- N. T. KIPP,

TIMOTHY HERRICK.

tially as and for the purpose set forth.

